Using a dynamic language doesn't mean you should not think in terms of (abstract) types; it only means that you're note relying on the compiler to check types for you. If anything, that should encourage you to be more disciplined in your thought processes (as you don't have anything else to rely on).
first, rest, next and conj are part of the sequence abstraction; use them when you're logically manipulating a sequence. peek, pop and conj can be part of either the stack abstraction (if used on lists or vectors) or the queue abstraction (if used on persistent queues). Because Clojure is highly polymorphic, some names, like conj, can be (and are) reused across abstractions, because they have very similar meanings (e.g. "add something" for conj). You still have to know what context you're using them in in order to understand exactly what they're going to do (e.g. conj on a vector or on a seq across the same vector will not do the same thing). On 10 November 2017 at 12:49, Justin Smith <noisesm...@gmail.com> wrote: > first and rest are defined in terms of position, and work on anything that > can be treated as an ordered collection > > peek and pop work in terms of "natural insertion order" and only work with > things that behave like a stack - (so not lazy-seqs, strings, etc.) > > lists push and pop from the front, vectors push and pop from the end, > queues push to one end, pop from the other > > On Thu, Nov 9, 2017 at 6:06 PM Ethan Brooks <ethanabro...@gmail.com> > wrote: > >> Also, pop throws an exception on the empty list whereas rest returns (). >> >> On Thursday, May 30, 2013 at 12:43:14 AM UTC-4, Seven Hong wrote: >>> >>> Hi all, >>> >>> Could some one explain what's the difference between first and peek, >>> rest and pop? For me it looks like they behave exactly same on sequences.. >>> >>> Thanks! >>> >>> Best, >>> >>> Seven Hong >>> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
